AS1920 datasheet(4/14 Pages) AMSCO

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AS1920/AS1922

Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s

6 Electrical Characteristics

VCC18 = 1.8V, VCC3 = 3V, VCCA = VCC3, TAMB = -40 to +85ºC (unless otherwise specified).

Table 4. Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VRT18

Reset Threshold VCC18

1.653

1.683

1.713

VRT3

Reset Threshold VCC3

2.763

2.805

2.847

VRTA

Reset Threshold VCCA

0.982

1.00

1.018

VCC3, VCC18

Operating Voltage

RESETN in Correct Logic State

3.3

IVCC18

VCC18 Supply Current

VCC18 < VCC3, VCC18 = 1.8V

0.7

µA

IVCC3

VCC3 Supply Current

VCC18 < VCC3, VCC3 = 3V

6.2

µA

IVCCA

1. Guaranteed by design.

VCCA Input Current

VCCA = 1V

-15

IOUT

Open-Drain RESETN

Output Current

Reset Not Asserted, Forced to 0V

µA

ILEAK

Open-Drain RESETN Output

Leakage Current

Reset Not Asserted, RESETN

Forced to 5.5V, TAMB = 25ºC

-0.1

0.1

µA

tRST

Reset Pulse Width

RESETN Low, TAMB = 25ºC

2. Measured from the time (t1) when the input passes through the input threshold voltage (VRTX) to the time (t2)

when RESETN passes through 1.5V.

140

200

280

tUV

VCC Undervoltage

Detect to RESETN

VCC18, VCC3, or VCCA <

Reset Threshold by > 1%

TAMB = 25ºC

130

µs

VOL

Output Voltage Low, RESETN

ISINK = 2.5mA, VCC3 = 3V,

VCC18 = 0V

0.15

0.4

ISINK = 100µA, VCC3 = 1V,

VCC18 = 0V

0.05

0.3

ISINK = 100µA, VCC3 = 0V,

VCC18 = 1V

0.05

0.3

ISINK = 100µA, VCC3 = 1V,

VCC18 = 1V

0.05

0.3

VOH

Output Voltage High, RESETN

ISOURCE = 1µA (AS1922-xx)

VCC3 -

0.65

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